![will having the grub on usb drive effect hdd will having the grub on usb drive effect hdd](https://i.stack.imgur.com/xmvFD.png)
- #Will having the grub on usb drive effect hdd how to#
- #Will having the grub on usb drive effect hdd install#
- #Will having the grub on usb drive effect hdd code#
Posted: Tue 4:52 pm Post subject: Re: UEFI on ASUS Sabertooth 990fx r2?ĭONAHUE is giving you good practical advice concerning System Rescue CD. The machine I'm writing from has windows and gentoo in uefi mode and another gentoo that is legacy bios, not uefi so the answer is yes, you can ignore uefi and use legacy BIOS.
#Will having the grub on usb drive effect hdd install#
So for my install on HDD if I don't use UEFI at all would there be any problems (if the system supports BIOS mode)? uefi is needed for a standard secure boot installation to work, however uefi does not need secure boot.
![will having the grub on usb drive effect hdd will having the grub on usb drive effect hdd](https://d7x.promiselabs.net/site/uploads/2019/05/2-booting-grub-from-a-usb-flash-removable-device.png)
Secure boot and uefi are not the same thing. If the computer has uefi but secure boot is enabled, sysrescd/usb boots in bios mode by default. I f the computer does not have uefi, it boots in legacy bios mode by default. The sysresccd usb flash boots either uefi mode or legacy bios mode depending on which choice is made in bios on a uefi/bios equipped computer. Since (as you said) I disabled secure boot, do I really need to create a UEFI bootable media? Or you meant: "take this (which works with UEFI) instead of trying to build your own liveUSB"?
#Will having the grub on usb drive effect hdd how to#
This shows how to install SystemRescueCD on USB but it doesn't say anything about UEFI.
#Will having the grub on usb drive effect hdd code#
"Other os" is code for "disable secure boot". In a uefi/bios computer with secure boot disabled, the flash drive will appear twice in the boot list, one entry will be marked uefi, one not. I took a look at but I'm not convinced this solution might work for BIOS-only computers.ĭoes anyone have any idea on how to go about this?
![will having the grub on usb drive effect hdd will having the grub on usb drive effect hdd](https://i.stack.imgur.com/848my.png)
Setting up a UEFI/BIOS adaptive liveUSB setup seems to be even worse. My motherboard UEFI/BIOS settings tells it could also boot from "legacy first" which I assume is BIOS compatibility layer for boot devices. Do I really need UEFI in order to enjoy Gentoo ? Until now I never had any problems with GPT + Grub (legacy) + BIOS mode. This is as far as (I think) I understood it:Ī) I partition my USB key (or SSD drive connected through USB 3.0 ) as GPTī) I create a EFI partition (type EF00 formatted as FAT32, ~512MB), a BIOS boot partition (not formatted, ~1MB) and a boot partition containing kernels (/boot as ext2 or ext3, ~512MB) ? (not sure if BIOS boot and /boot should be the same)Ĭ) I install GRUB 2 to both UEFI and BIOS boot partition (HOW exactly I don't know)ĭ) I configure the kernel to work in UEFI mode and integrate initramfs into the UEFI boot image since no external file is supported Now I have problems finding some good and clear documentation on how to create a liveUSB that would work on both UEFI and BIOS. I've been told on Gentoo's IRC that I should create a EFI/ESI partition for it to work properly. (not sure if the secure boot setting in ASUS bios is causing some interference: I can either set it to Windows or Other OS, although I can't disable it). However, after having installed gentoo on that very platform, the USB key wouldn't boot on that computer anymore (UUID=. I've tried to setup a liveUSB on that given platform which I could also use as a rescue media on other computers. Posted: Sun 4:57 pm Post subject: UEFI on ASUS Sabertooth 990fx r2? Gentoo Forums Forum Index Installing Gentoo Gentoo Forums :: View topic - UEFI on ASUS Sabertooth 990fx r2?